Anti-wear ferrous sintered alloy

Abstract

The present invention relates to an anti-wear ferrous sintered alloy composed of carbon, molybdenum, phosphorus, boron, and, if desired, copper, and the balance iron.

What is claimed is: 
     
       1. Anti-wear ferrous sintered alloy consisting essentially of 0.5-2.0% carbon, 3-18% molybdenum, 0.8-3.0% phosphorus, 0.02-0.3% boron, and 0- 10% copper, by weight, with the balance substantially all iron. 
     
     
       2. Anti-wear alloy as claimed in claim 1 in which said alloy comprises a steadite precipitate in a bainite matrix with molybdenum and boron in solid solution in said steadite. 
     
     
       3. Anti-wear alloy as claimed in claim 1 in which said alloy comprises a steadite precipitate in a martensite matrix with molybdenum and boron in solid solution in said steadite. 
     
     
       4. Anti-wear alloy as claimed in claim 1 comprising 0.1-10% copper. 
     
     
       5. Anti-wear alloy as claimed in claim 1 formed from the following powders: graphite having a particle size of 2-3 microns and providing said carbon,   molybdenum powder having a particle size of 5-6 microns,   -200mesh ferro-alloys providing said phosphorus and boron, and   -150 mesh iron powder.   
     
     
       6. A valve seat made from the alloy of claim 1. 
     
     
       7. A valve lifter made from the alloy of claim 1. 
     
     
       8. A valve seal made from the alloy of claim 1.